Thanks for the response.
I tried running my sgminer with the setx GPU_MAX_ALLOC_PERCENT 100 command, and noticed no difference, GPU still uses ~1.5gb of memory out of avalible 3gb
Should it have made a difference?
There is no miner that can use more than 2 GB of VRAM.
This is a bug of opencl.
This environment variable is for RAM, instead of VRAM